Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

What are the lethal genes, What are the lethal genes? The Lethal genes ...

What are the lethal genes? The Lethal genes are genes having at least one allele that, while present in the genotype of an individual, causes death. There are dominant lethal a

What is the name of the larva of corals and sea anemones, What is the name ...

What is the name of the larva of corals and sea anemones? What is the biological significance of that larval stage? Sexual reproduction in corals and sea anemones has a larval

Define the remodeling rate, Q. Define the Remodeling rate? Human corti...

Q. Define the Remodeling rate? Human cortical bone: 2-10%  per year depending on site and age of patient. Trabecular bone: Higher turnover rate 20-30% per year. In a stu

Hypocalcaemia, H y po c a l c a e m i a It is also known as ...

H y po c a l c a e m i a It is also known as milk fever or parturient paresis. The disease occurs due to imbalance in input and output of calcium and is characterize

Phylogenetic systems of classification, Q. Phylogenetic systems of classifi...

Q. Phylogenetic systems of classification? As already pointed out 'earlier that in Phylogenetic system, the plants are classified according to their evolutionary relationships.

Which series of enzymes in order convert citrate, Within the cytosol which ...

Within the cytosol which series of enzymes in order convert citrate back into pyruvate: -citrate lyase, malate dehydrogenase, malic enzyme - citrate synthase malate dehydroge

Determine about the chloroplast, Determine about the Chloroplast One of...

Determine about the Chloroplast One of the most distinguishing features of all eukaryotic plant cells is that in addition to mitochondria, they contain special light harvesting

Phylum annelida are vascular beings, Q. What is signifying when it is said ...

Q. What is signifying when it is said that beings of the phylum Annelida are vascular beings? From which other phyla of the animal kingdom does this feature differentiate them?

Bio-insecticides and bio-pesticides, A large number of plants are used for ...

A large number of plants are used for bio-pesticides and bio-fertilizers. Several plant species are used as insecticides against aphids and larvae of insect pests: for insects like

What do you understand by compound eye, What do you understand by Compound ...

What do you understand by Compound eye? The characteristic eye of the Arthropoda. It comprise many ommatidia, the basic optical unit of compund eye, grouped together to form th

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd